Fix Bamboo ONE issues (rhbz 1317116)
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From 580549ef6b3e3fb3b958de490ca99f43a089a2cf Mon Sep 17 00:00:00 2001
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From: Benjamin Tissoires <benjamin.tissoires@redhat.com>
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Date: Fri, 25 Mar 2016 15:26:55 +0100
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Subject: [PATCH] HID: wacom: fix Bamboo ONE oops
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Looks like recent changes in the Wacom driver made the Bamboo ONE crashes.
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The tablet behaves as if it was a regular Bamboo device with pen, touch
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and pad, but there is no physical pad connected to it.
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The weird part is that the pad is still sending events and given that
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there is no input node connected to it, we get anull pointer exception.
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Link: https://bugzilla.redhat.com/show_bug.cgi?id=1317116
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Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
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Acked-by: Ping Cheng <pingc@wacom.com>
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Cc: stable@vger.kernel.org
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Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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---
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drivers/hid/wacom_wac.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
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index bd198bbd4df0..02c4efea241c 100644
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--- a/drivers/hid/wacom_wac.c
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+++ b/drivers/hid/wacom_wac.c
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@@ -2426,6 +2426,17 @@ void wacom_setup_device_quirks(struct wacom *wacom)
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}
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/*
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+ * Hack for the Bamboo One:
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+ * the device presents a PAD/Touch interface as most Bamboos and even
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+ * sends ghosts PAD data on it. However, later, we must disable this
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+ * ghost interface, and we can not detect it unless we set it here
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+ * to WACOM_DEVICETYPE_PAD or WACOM_DEVICETYPE_TOUCH.
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+ */
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+ if (features->type == BAMBOO_PEN &&
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+ features->pktlen == WACOM_PKGLEN_BBTOUCH3)
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+ features->device_type |= WACOM_DEVICETYPE_PAD;
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+
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+ /*
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* Raw Wacom-mode pen and touch events both come from interface
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* 0, whose HID descriptor has an application usage of 0xFF0D
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* (i.e., WACOM_VENDORDEFINED_PEN). We route pen packets back
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--
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2.5.5
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@ -691,6 +691,9 @@ Patch694: ext4-fix-races-of-writeback-with-punch-hole-and-zero.patch
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Patch695: cdc_ncm-do-not-call-usbnet_link_change-from-cdc_ncm_.patch
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Patch696: usbnet-cleanup-after-bind-in-probe.patch
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#rhbz 1317116
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Patch697: HID-wacom-fix-Bamboo-ONE-oops.patch
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# END OF PATCH DEFINITIONS
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%endif
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@ -2134,6 +2137,9 @@ fi
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#
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#
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%changelog
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* Tue Apr 12 2016 Josh Boyer <jwboyer@fedoraproject.org>
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- Fix Bamboo ONE issues (rhbz 1317116)
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* Mon Apr 11 2016 Josh Boyer <jwboyer@fedoraproject.org>
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- CVE-2016-3951 usbnet: crash on invalid USB descriptors (rhbz 1324782 1324815)
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- CVE-2015-8839 ext4: data corruption due to punch hole races (rhbz 1323577 1323579)
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